"These citizens will be taken away and will be investigated. We already have confirmation that they had passports that were stolen in Greece," said Aníbal Baca, a spokesman for Honduras' Police Investigation Unit.
"We suppose that they were going to illegally travel by land all the way to the United States," Baca told reporters. He did not provide details on why police believe the group was planning to go to the United States but said that investigators would do more digging in the coming hours to confirm the group's travel plans.
Greek authorities and Interpol were involved in Honduras detaining the men, Baca said. Before the men had arrived, they had traveled to Lebanon, Turkey, Brazil, Argentina and Costa Rica, he said.
Baca didn't specify why authorities had been tracking the men. They will be presented to prosecutors to be investigated on charges of falsification of documents, he said.
Earlier this week, authorities in St. Maarten detained three people who they said were of Syrian descent and were traveling with false Greek passports, according to information provided by St. Maarten authorities to U.S. law enforcement, a U.S. official said.
None of the detentions have been tied to terrorism. Many migrants with no ties to terrorism travel on false documents around the world.
Local media, citing a top security official, reported that Honduras has detained more than 12,000 foreigners who illegally have entered the country this year.
New U.S. effort to flag fake documents
It's unclear whether U.S. authorities played any role in the Honduras case.
But the United States is sharing information more widely from databases of false travel documents with countries in the region, the U.S. official said.
Partly in the wake of the Paris attacks, U.S. authorities are helping to coordinate a new effort to flag suspected fake passports and identity documents that terrorists could exploit to travel, the official said.
Intelligence and homeland security officials are increasingly alarmed at evidence that terrorist groups are using false passports to hide their travel, the official said.
Sharing information from the databases, the official said, can help prevent people from using migrant flows through Latin American countries to get into the United States. It's also part of renewed U.S. efforts to share more information with friendly countries so they can use it to enforce their own security, the official said.